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Graham's Wrinkles (hints & tips)
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Graham Slee View Drop Down
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Joined: 11 Jan 2008
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Points: 16314 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Topic: Graham's Wrinkles (hints & tips)
    Posted: 22 Dec 2009 at 11:00am
My intention here, for the DIY "hot-modder", is to show how some of our older gear can be tweaked-up to perform a bit better.

We can also incorporate these mods for those not of a DIY leaning for a modest sum.

More to follow.
That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps
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jonclancy View Drop Down
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Points: 105 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jonclancy Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2010 at 10:21pm
I'm looking forward to reading more, Graham.

Now I've just got over a particular work bulge, I hope to join in the fun with some ideas, too.

Cheers

Jon
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Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rantalot Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2015 at 10:54pm
Anyone who has an older pair of speakers (me included) should get the reversalytic (non polarised electrolytic) capacitors replaced in the speaker crossover, this also include Polyester, with Polypropylene. The change is quite stunning. I replaced the Polyester caps in my Spendors a few years ago and was astounded by the improvement. I see quality speakers vintage 60s and 70s being sold for a song when all they needed was a component upgrade.
Hope this helps someone.
Norman
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Points: 6197 		Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2015 at 7:57am
Hi Norman. Thanks for the post!

A great example of thread resurrection!
Bob

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Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
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Points: 2139 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BackinBlack Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2015 at 8:52am
Norman,
A good observation. There are some great older speakers around, the current vogue for smaller enclosures demands a lot of designers and drive units, we seem to have forgotten the older classic 3 way style of speaker with its larger drive units and effortless bass. Updating the crossover components can really bring them back to life, and all at bargain prices!
Just listen, if it sounds good to you, enjoy it.
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Points: 1475 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Richardl60 Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2015 at 1:44pm
Whilst only limited exposure to some well reviewed PMCs (£3-6k brackets) my ears suggest that they are relatively over priced for the performance/construction vs my older transmission line designs.  I agree a re-cap should restore the performance personally I would avoid 'the supercaps' and try and mirror the make and values from originals.
 
I have found that rewiring old 25 year old wiring with modern high purity (silver in my case) speaker cabling made a signififant improvment, original cabling appears thick mains type copper (non ofc).  Whilst the caps/rewire and new WBT binding posts all came at the same time and burn in was 200 hours+, various what I perceived driver induced coloration has vanished.
 
Symathetic and good recap from reputable source (try Jerry at Falcon Accountics) and top quality speaker wire will go a long way to enhancing older designs.
 
Richard
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Rousillon Quote  Post ReplyReply Direct Link To This Post Posted: 24 Sep 2016 at 4:26am
Great posts. All (!) my speakers are 70's vintage!! 
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